Three were killed and four were injured in the shooting — and officials spent much of the afternoon searching for Haughton.

Haughton was reportedly found dead inside the Azana Salon & Spa.

Police have said Haughton was reportedly wearing a gray sweater and blue jeans at the time of the shooting — and carrying a black and white backpack.Haughton is reportedly the estranged husband of one of the hair stylists at the spa. The

Brookfield Patch reports an Azana employee who spoke to Patch said the woman’s estranged husband was out of work and his wife was working every day to bring in money to pay the bills. However, she recently decided to leave him, and that’s when the problems started. An Azana employee told the Patch the two have two daughters, ages 12 and 21.

Police have said the suspect’s vehicle — a black 2003 Mazda Protege, with license number 171-KZD was located, but not in Brookfield. The location where the vehicle was found was not disclosed by officials.

Brookfield Police Chief Dan Tushaus said an IED, or improvised explosive device was identified inside the Azana Salon & Spa — which hampered the clearing of the building.

A FOX6 News crew reported a hazardous disposal unit was on site at the suspect’s home on Glenbrook Road in Brookfield Sunday afternoon. Some homes in the area were evacuated, while others were given the opportunity to be secure in their home or leave the area.

Brown Deer Police Chief Steven Rinzel told FOX6 News no one was in the home, and police were able to locate Haughton’s family members at another location.Chief Rinzel confirmed to FOX6 News no explosive devices were found at the home.Chief Rinzel says Brown Deer police have responded to the home before, and police have made at least one arrest there in the past.

According to CCAP, Haughton was in court on Thursday, October 18th, when a “no contact” order was filed against him. Haughton was prohibited from owning firearms, and was supposed to turn them over to the Milwaukee County Sheriff’s Office — according to CCAP records.

Just before 5:00 p.m. Sunday, Froedtert Hospital released some details on those injured in the shooting in a statement to FOX6 News.

Froedtert officials say all four individuals taken to the hospital for treatment are females who suffered gunshot wounds. Two of these gunshot victims underwent surgery. Three are in satisfactory condition, and one is in critical condition, according to Froedtert officials.

In a statement, Froedtert officials said: “We mobilized the appropriate physicians, nurses and operating room personnel to care for the victims. This is consistent with many drills we run to be prepared for mass casualty situations as a Level 1 Trauma Center. We were fully prepared to handle this situation with staff currently in the hospital. No additional staff were called in.”

The Brookfield Patch has reported one of those injured is pregnant. She reportedly suffered non life threatening injuries, according to the Patch.

Froedtert Hospital was placed on lockdown, as of 1:45 p.m. — with no one allowed to enter or exit the hospital, and movement within the hospital forbidden. Froedtert’s lockdown was lifted just before 4:30 p.m. Children’s Hospital of Wisconsin was also placed on lockdown, but shortly before 4:00 p.m. Sunday that lockdown was lifted.

Officials placed the hospitals under lockdown for portions of the afternoon because the location of the shooter is unknown. Hospital security, Wauwatosa police and Milwaukee County Sheriff’s officials patrolled hospital grounds.

Brookfield Square Mall across the street was on lockdown following the shooting, but according to the Brookfield Patch, around 1:20 p.m. people were allowed to leave the mall.

There were multiple police agencies on the scene — with Brookfield Police Department handling the scene.

The FBI told FOX6 News a SWAT Team, a victims’ specialist, a hostage negotiator and several command personnel from the Milwaukee field office were dispatched to the scene.

The Bureau of Alcohol, Tobacco and Firearms has 10 agents on the scene.A perimeter was established — extending to the BP gas station in the area.

The Wisconsin DOT had closed the I-94 eastbound and 1-94 westbound ramps to head northbound on Moorland Road due to law enforcement activity. Moorland Road was closed in both directions from I-94 to Bluemound Road. These on/off ramps were reopened around 6:00 p.m. Sunday.

Sunday’s shooting in Brookfield comes about 10 weeks after Wade Michael Page opened fire at the Sikh Temple in Oak Creek, killing six and critically injuring three.